Yes, it's a good article and shows six of his (Sorrell's) illustrations of Stonehenge. Not sure if there's a book out there with all his reconstructions but there's the following which should have some of them -

http://www.historytoday.com/dt_main_allatonce.asp?gid=15782&g15782=x&g17724=x&g30028=x&g20991=x&g21010=x&g19965=x&g19963=x&amid=15782

You can see his bird's eye perspective of Stonehenge (now hanging in the Salisbury and South Wiltshire museum) at -

http://www.salisburymuseum.org.uk/galleries/index.php?Action=4&obID=156&prevID=46&oprevID=8